iDye comes in 46 vibrant colors - 30 colors (402-431) for 100% natural fabrics and 16 colors (447-462) for polyesters and nylons. There are also three laundry aids: Color Remover which will remove or lighten a color and brighten whites; Sun Blocker which when added to the wash cycle will penetrate clothing and block harmful UV rays from the sun; and Fixative which increases wash fastness stops bleeding and helps prevent staining. iDye comes in a packet that dissolves in water which means there is no handling of messy dye powders. Just throw the dye packet in add salt and run through the wash cycle. iDye Poly and dark/bright iDye natural colors require the stove-top method. Packets will dye two to three pounds of fabric.